set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 1 EXERCISES
The following question based on ecology and environment awareness topic of general science mcq
(a) CO2 level is increased
(b) O2 level is significantly increases
(c) O2 level is increased
(d) CO2 level is significantly decreased
The correct answers to the above question in:
Answer: (a)
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Read more ecology and environment awareness Based General Science Questions and Answers
Question : 1
Which one is nature's cleaner ?
a) Producers
b) Decomposers and scavengers
c) Consumers
d) Symbionts
Answer »Answer: (b)
Question : 2
More than 70% of world’s freshwater is contained in
a) glaciers and mountains
b) antarctica
c) polar ice
d) greenland
Answer »Answer: (c)
Three fourth the surface of the earth is covered by oceans which contain 97.5% of total water.
It is marine water with about 3.5% salt content only 2.5% is fresh water which occurs on land.
Most of this water (1.97%) occurs from frozen ice caps and glaciers, and 0.5% of fresh water occurs as groundwater.
Rivers and lakes contain 0.02%, soil 0.01% while the atmosphere possesses 0.001% of water as vapours.
Question : 3
Which most often limits the primary productivity of the ecosystem ?
a) Oxygen
b) Consumers
c) Solar radiation/light
d) Nitrogen
Answer »Answer: (c)
Question : 4
Which National park is the new home of the Indian onehorned rhinoceros ?
a) Jim Corbett
b) Kanha
c) Dudhwa
d) Bandhavgarh
Answer »Answer: (c)
Question : 5
Human population growth ________.
a) is currently in a logistic phase
b) is currently exponential
c) has an S-shaped curve
d) has reached carrying capacity
Answer »Answer: (b)
The exponential growth model virtually describes the population explosion of humans.
Question : 6
Which one of the following is not a gaseous biogeochemical cycle in ecosystem ?
a) Phosphorus cycle
b) Nitrogen cycle
c) Sulphur cycle
d) Carbon cycle
Answer »Answer: (a)
Phosphorus is mostly used as phosphate. Its reservoir pool is phosphate rocks while cycling pool is soil for terrestrial ecosystems and water for aquatic ecosystems.
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